Relay



July 13 1926.

P. a. PARKS Er AL RELAY Filed March a. 1923 Patented July 13, 1926.

UNITED STATES,

PATENT OFFICE.

PAUL 1B. PARKS, OIE OAK PARK, AND JOHN VAN V'ULPEN, OF CHICAGO, ILLINOIS, A SIGNORS TO VAPOR CAR HEATING COMPANY, INC., 02- OEIICAG-O, ILLINOIS, A COR PORATION OF NEW YORK.

RELAY.

Application filed March 8, 1923, Serial No, 823,699.

Our invention relates to 'a relay, and one of the principal objects is to construct and arrange the armature so that the contact member or bridging member carried there by will have a wiping movement over the fixed contactsof the relay tending to keep all of said contacts clean. A further object is to provide in a relay having two pairs of fixed contacts a pivoted contact or bridging member on the relay armature which will be self adjusting so as to insure proper seating upon the contacts on both sides of the gaps which it bridges.

The invention has for a further object such other new and improved constructions, arrangements and devices relating to relays as will be hereinafter described and claimed.

The invention is illustrated in a preferred embodiment, in the accompanying drawing in which Fig. 1 is a front elevation of the relay shown as enclosed in a suitable housing, the front portion of which is broken away;

Fig; 2 is a sectional view on line 22 of Fig. 1;

Fig. 3 is a sectional view on line 3-3 of Fig. 1;

Fig. 4 is a sectional view on line H of Fig. 2;

Fig. 5 is a view, in perspective, of the contact or bridging member carried by the relay armature.

Referring to the drawing, 10 designates the coil of the relay magnet and 11 the core thereof which, as shown, projects beyond the bottom of the coil. The magnet is secured by a screw 12 to an outstanding plate 13 of a bracket structure, the back plate of which is indicated at 14: and is secured to a block or base plate 15 by screws 16. The bracket is formed with a pair of forwardly projecting arms 17 to the outer ends of which is fixed a rod 18, the arms 17 extending on opposite sides of the projecting end of the magnet core 11. The armature oi the magnet consists preferably of a channel-shaped piece of soft iron 19 pivoted on the rod 18 between the bracket arms 17 with the inter position of washers 20. To prevent adhesion to the core 11 the armature 19 is furnished with a bronze plate 21 secured thereto by rivets 22. Secured to the under side of the armature 19 by screws 23 is a block 24 of insulating material to which is fastened by a screw 25 a leaf spring 26 slotted at 27 for the guide screw 28. The outer end of the leaf spring is bent over at right angles to the body of the spring, as indicated at 29, and has pivoted thereto the bridging plate 30. 31 is a pivot stud for connecting these parts having a head 32 and oeing riveted over at 33 on a washer 3%, the connection being such that the bridging member may turn freely on the stud. The relay is provided with an upper pair of contacts 35, 36 and a lower pair of contacts 37, 38 preferably set slightly forward of the upper contacts. The contacts 35, 37 are secured to a plate 39. The contacts 36 and 38 are arranged on separate plates a0, 11. The bridging member is formed with a forwardly projecting web i2 carrying contact studs 43, 14. 4:5 is a housing for enclosing the relay which is secured to the base plate 15 by screws 46.

47, 18 are binding posts for wires 49, connected to the ends of coil 10. 51 is abinding post connected by bar 52 with the plate 39 carrying contacts 35, 37, and 53, 5-1 are binding posts connected respectively with plates 40 and 41 carrying the contacts 36, 38. These five binding posts extend through the base plate 15 and are secured thereto, in each case, by a nut 55. The plate 15 is secured to the front face of a base 56, the latter being perforated for the projecting ends of the binding post or terminal studs 47, 48, 51, 53, 5 1. Onthe back of the base are arranged spring contacts 57 against which the ends of the terminal studs bear, this arrangementproviding a simple means for demountably supporting the plate 15 on the'base 56 which provides for the electrical connections to the relay.

The pivotal mounting of the armature,

with respect to the magnet at points above, or it might be below, the fixed contacts and the yielding support of the contact member 30, 12 on the armature due to the elasticity of spring '26 produces a wiping or sliding movement of the contact studs 43, 414 against the fixed contacts 35, 36, or 37, 38, as the case may be, which tends to keep all of these contacts clean. That is the lever on which the movable contact studs are mounted is in effect elbow shaped with the limb extending toward the fixed contacts consisting of a spring, so that the studs after coming against the fixed contacts will be dragged or pushed across the St ace oi? said contacts by the continued turning oi" the lever on its 'lulcrun'i, pin 18. That is, the main portion of the spring stands approximately transversely to till; direction of movement ot the mo *able contact and is carried by an armature which is pi voted at a point a substantial distance on one side of the spring which gives the wiping or drawing edect referred to. The pivotal i'i'ionnting of the contact or bridging member 30, 4-2 on the spring in sures proper seating oi? the bridging 1nernher at both ends against: the tired contacts at opposite sides of the gaps which said member britilges thereby insuring the citectiveness of the wiping action where lLWO pairs of contac 's are involved. The distance between the armature in its lower por-zition and the core ll of the magnet is relatively small in comparison with the travel ot the outer end of spring "t? l at a coi'isiderahle i so t,

gap can be provided between the upper and lower pair of lined cortact's While at the same time iierdngg; o t the spring at each end (it its oscillatory movement is insured. in

etlective wiping .noven'icni of the movable contacts on the lll' 'tfli contacts is thus prov d t it ring ot the c o- 1 a i The rockit t= 'iiiging member IHtlItS it sel't-seating against both of the lived contacts in the upper and lower position oi the ari'natnre, 'llhese results are o tained by the construe ion and arra igei'nent (it parts which my be manntaetnretl and resembled at small e; ;pensc and iv iecessity of minute a ljustinents. The channeled configuration. of the armature and the arinngcnient ot the same so that it straddles the projecting end of the magnet core allows a considerable tlil'llllltililc of movement on the part; of the armature n'itl out necessitating the expenditure of an (:1 cos i an'iount oit imgnetic force.

v; iiilc ve ha e described our invention in a preferr d eiti'il'iodiinent, it will be nnderstood that We contempla e any ano ill strnctural modifications Within the scope oi the annexed claims.

Vi e claim:

1. In a relay, the cor troa'iagnet, two spaced t able contact: adapted to oscillate between the fixed contacts, a spring :arrying movable contact and extending a binatiion of an eleciiied ccn'i'tacts, a inevinately transversely to the direction of movement of the .i'novable contact, and an arenature tor the magnet to which said spring is a point a secured and which is pivoted substantial distance at one side of the sp so that the rocking movement thereof produces Wiping nioveniei'its of the movable contact on the lived contacts.

2. In a relay, the combination of an elec troniagnet, two spaced pairs of fixed contacts, a bridging member adapted to oscillate between the pairs of lined contacts, a spring approximately transverse to the direction of movement oi the bridging mem her to vvhicn the bridging member is pivoted, and an armature :tor the magnet to which the spring is secured and which pivoted at a point at a substantial distance on one side or the spring, so that the rocking nieveinents oi the armature produce Wiping movements of the bridging member on the lined contacts.

3. In a relay, the combination of an electroniagnet, two spaced pairs of tired con tacts, a ln'idging ineii'iber adapted to oscillate between the pairs of tired contacts, a spring approxiinately transverse to the movement of the bridging member, the end oi" which is bent at substantially right angles to the body thereof, means for pivoting the bridging nieinbe at a point intermediate its ends to the angnlarly disposed end of the spring, and an armature tor the magnet to which said spring is SGClll'Ct and "which. is pivoted at a point a substantial distance on one side of the spring so that the rocking movements oi? the arn'iat'nre produce Wiping movements of the ln'idging member over the lined contacts.

4-. in a relay, the ct'inibination of an electromagnehan arn'iatiure, two pairs of tired spaced contacts, and a bridging n'iei'nber pivotally and yieldingly sustained on said armature trai'isvcrscly thereof in position to be brought into contact alternately with one or the other pair of tiXed contacts.

5. In a, relay, the con'ibination ot a vertically arranged elc:tro-Inagnet, upper and lower pairs of lxed spaced contacts ranged at one side 7 oi and belmv the magnet}, the tower pair or contacts being offset to vard the magnet; with respect to the upper contacts, a horiiiontally a ranged arniature pivoted to oscillate under the magnet, an insulating block carried by said arn'iatnre, a spring}; secured to the under side oil said block and formed with a do\vn-- turned end, a bri lg ineinbcr pivoted at a point intermediate its ends to the down turned end of the spring adapted to engage, with wiping action, with said fixed contacts.

6. In a relay, the combination of an electroinagnet, an armature pivoted with respect to the magnet, two pairs of fixed spaced contacts, and a bridging ineinber pivotally and yieldingly sustained on said arn'iatnre transversely thereof in position to be brought; into contact alternately With one or the other pair or said fined contacts.

7. In a relay, the combination of an elec troinagnet, an armature pivoted with respect to the magnet, a spring on the arinature, two pairs at fixed spaced contacts, and a bridging ineinber pivoted to said spring n (in transversely thereof in position to be brought into contact alternately with one or the other pair of said fixed contacts.

8. In a relay, the combination of an elec" troniagnet comprising a coil and a core, the end oi which projects from the coil, a bracket having arms extending on opposite sides of the end of the core, a channelshaped armature pivoted to said bracket arms, fixed spaced contacts and a contact member supported on said armature to oscillate between said fixed contacts.

9. In a relay, the combination of an electromagnet comprising a coil and a core, the end of which projects from the coil, a bracket having arms extending on opposite sides of the end of the core, a channel-shaped armature pivoted to said bracket arms, an insulating block on the under side of said armature, a spring on said block, fixed spaced contacts, and a contact member on said spring to oscillate between said fixed contacts.

10. In a relay, the combination of an electromagnet comprising a coil and a core, the end of which projects from the coil, a bracxet having arms extending on opposite sides of the end of the core, a channel-shaped armature pivoted to said bracket arms, an insulating block on the under side of said armature, a spring on said block, fixed spaced contacts, and a contact member pivoted to the spring to oscillate between said fixed contacts. 2

11. In a relay, the combination of an electromagnet comprising a coil and a core, the end of which projects from the coil, a bracket having a ms extending on opposite sides of the end of the core, a channel-shaped armature pivoted to said bracket arms, an

insulating block on the under side of said armature, a leaf spring on said block having an angularly disposed outer end, fixed spaced contacts, and a contact plate pivoted to the end of the spring having an outstanding web to oscillate between said fixed contacts.

12. In a relay, the combination of an electromagnet comprising a coil'and a core, the end of which projects from the coil, a bracket having arms extending on opposite sides of the end of the car, a channel-shaped armature pivoted to said bracket arms, an insulating block on the under side of said armature, a leaf spring on said block having an angularly disposed outer end, two pairs of fixed spaced contacts, and a bridging plate pivoted to the end of said spring and provided with a pair of contact studs to bear against said fixed contacts.

13. In a relay, the combination of an electroniagnet, an armature, two pairs of fixed spaced contacts, a spring on said armature having an angnlarly disposed end, and a bridging plate arranged transversely to the spring and pivoted to the end of the spring formed with a web which projects between said pairs of contacts.

a 14. In a relay, the combination of an electromagnet, an armature, two pairs of fixed spaced contacts, a spring on said armature having an angularly disposed end, and a bridging plate arranged transversely to the spring and pivoted to the end of the spring formed with a web which projects between said pairs of contacts and is provided with contact studs to bear against said fixed con tacts.

15. In a relay, an electromagnet comprising a coil and a core, the end of which projects beyond the coil, and a channelshaped armature the flanges of which extend on opposite sides of the projecting end of the core.

16. In a relay, an electro-magnet comprising a coil and a core, the end of which projects beyond the coil, and a channel-shaped armature pivotally mounted with respect to the magnet, the flanges of which extend on opposite sides of the projecting end of the core.

PAUL B. PARKS. JOHN VAN vu PnN. 

